Kuroda Josui, a brilliant tactician of the Warring States era, is the envoy sent to the enemy's castle. One problem. He does not return. Did this trusted vassal betray his lord or was he seized by the treacherous enemy lord? He knows the price of betrayal is to bring death to his family. The Kuroda vassals refuse to abandon him. Knowing their lord is not a traitor, they set off to find Kuroda Josui and bring him back if they can. An angry lord wants to deliver a severe blow to a backstabbing vassal. Loyal vassals seek to save their lord. What has fate decided for Kuroda Josui?